Steam-trap



(No Model.) JI MCKE'LLAR.

STEAM TRAP.

, Patented July s, 1894.

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,t UNITED STATES 'PATENT OFFICE,

JOHN MOKELLAR, OF SAN FRANCISCO, CALIFORNIA.

, STEAM-TRAP.

VSPECI-FICAZLIIO1\T forming part of Letters Patent No. 522,268, datedJuly 3,' 1894. v Appliquer nea December 20,1893. sonal No. 494,151.(nomas.)

To @ZZ whom/t may concern: v

Be it known .that I, JOHN MQKELLAR, a citizen of the United States, anda resident of the city and county of San Francisco, State of California,have invented certain newand useful Improvementsin Steam-Traps; and Ihereby declarev the following specication and the drawingstherewith tobe a full, clear, and exact description of myimprovements aforesaid. v

My invention relates to what are called steam traps, for collecting anddischarging condensed water formed in steam pipes or vessels byliquefaction, and toc'ertain improvements 0n steam traps, for whichLetters Patent of the United States, No. 481,507, were granted to me on'the 23d day of August, 1892.

My present invention consists in adapting my improved steam traps to thehigh pressures employed at this day, especially for marine purposes;also adapting the V'apparatus to closed rooms without objectionableradiation of heat, and to lmeans of cleansing and operating theconnecting pipes, with other features that will be fully explainedinconnection with the accompanying drawings, in which Figure 1 is a planview of a steam trap made according to my improvements. Fig. l2 is aside elevation of the same trap taken on the plane at an angle of ninetydegrees with respect to Fig. 1. Fig. 3 is a cross section on the linez--z of Fig. 4. Fig. 4 is a vertical section on the line y-y of Figs.land 2.

Similar letters of reference are employed to designate like parts of thedierent figures of the drawings. p

The main-containing vessel A is cylindrical in form, open at the top toreceive the covering plate B, which is bolted to a iiange C in the usualmanner. A corresponding iiange C2 is formed around the bottom of thevessel A and between these lianges C C2 is a covering. D` of asbestus orother fibrous non-conducting material, and around this a covering ofwood D2 madegin staves, and secured by metallic bands c, as seen in Fig.2, or a covering of sheet metal, such as Russia iron or brass, so theexterior of the apparatus is in contour a plain symmetrical cylinder as!shown. In this vessel A is an open top oat E, guided at the bottom byledges e cast on -the interior ofthe vessel A.- `-Iri the bottom .of4thistloat Eis fastened a stem F that eX- tends up to the conicalpointed valve G, the two being joined by a loosely-fitting socket and across pinvm, as shown in Fig. 4.

The valve guide,- valve seat and escape aperture I are. combined in onemember K, screwed into vthe main plate .I of thecoverB, as shown. In thesides of the member K, around the valve G, are a series of inlets orapertures n, opening diagonally upward, through which the escape waterpasses without causing the usual noise that occurs when there is afixedl body of; wateraround such valves. vThe inclosing tube L is alsofastened to the plate J o f the top B, and serves to draw the wastewater from the bottom of the iioat vessel E. A' cock M is also providedfor emptying the main vesselAA, as seen in Fig. 4.

l Steam and water enter the trap. by the pipe N, ai1'd'4 after passingthe cock Of enter the chamber P, formed in the main cover B, the waterdraining down through theapertures o into the float vessel E and themain vessel A, the latter being all the time filled, so the buoyantaction -of the float vessel E holds the valve G shut until the vessel Ealso tills, then thisiioat vessel E sinks by its gravity, opening thevalve G and discharging the accumulated waterthrough the aperture I intothe chamber P, and out through the outlet pipe N3, the iioat vessel E,rising and closing the valve G when the buoyancy is sufficient. Theselatter described features pertaining to the float, escape valve, andconnected parts, are embodied in my Letters Patent hereinbefore referredto,land do not, therefore, constitute a part of my present invention.

Referring now to the steam and water ducts on the top of the trap, themain cover B is made with two chambers P and P2, the formercommunicating with the inlet pipe N', and the second chamber P2, with ablowlthrough pipe N2, also with the regular outlet pipe N3. The passageof steam through these chambers and'pipes is regulated by the cocks Oand O2. These cocks O O2 have ways or ports corresponding to the marks son the y hand wheels I-I H2, the one O having three ports or ways, andthe one O2 having two ports or ways, as indicated in Fig. 4. In theposition shown in Fig. 4 these cocks O' O2 are adjusted in the normalworking position, the inlet pipe N being open to the chamber P', and theoutlet or waste pipe Ns being open to the chamber P2, the blow-o pipe N2being closedeachway. If the eoelrO'isturned ninety degrees to the rightthis will open communication between the inlet pipe N and the blow-olifpipe N2 by means of the cross pipe Q, and steam or water is dischargeddirectly from the pipe N through the pipe N2, usually to a tank, theopen air or outboard on vessels. This is what I term the blow-throughposition. If the cock 02 is turned ninety degrees to the left, so itstwo ports s are in communication with the cross pipe Q and the chamberP2, this opens communication between-the inlet pipe N and cross pipe Qto the chamber P2, and consequently to the regular discharge pipe N3, sothat the water or steam escapes to a condenser, hot well or other placeWhere the regular waste water is commonly conveyed. In this manner theinlet pipe is at pleasure put in communication with the main vessel A,the blow-ofi' pipe N2, or the waste pipe N3, as is required in the caseof naval vessels, or other uses where circumstances are the same.

The bottom R of the main vessel A is made convex, as shown in Fig. 4, soas to withstand high pressure, the walls, cover and all other partsbeing made proportionally strong.

The coverings D D2 prevent objectionable radiation of heat, so the trapcan be set in an engine room or other closed space without discomfort toattendants.

I claim- 1. In a steam trap, a main containing vessel with a iloatvessel and escape valve, as herein described; a chambered main coverhaving inlet, blow-through, and Waste-water pipes communicating with thechambers in the cover, in the manner shown, multi-ported cocks to changethe flow ofA steam or Water from the inlet to either the blow-oli orwastewater pipes, in the manner substantially as described.

2. In a steam trap,a main containing vessel with a iioat vessel therein;a chambered cover with an inlet chamber having holes in its bottom forthe discharge of water into the main containing vessel 5 connectingpipes, as herein shown;cocks to connect the inlet pipes with theinterior of the main containing vessel, and with a waste chamber in thecover, and also With a direct blow-olf pipe, so steam and water can beled into the main vessel and ioat, into the Waste chamber in the cover,or discharged through a blow-olf pipe without entering the main vesselor the chambers in its cover, substantially in the manner described.

3. In a steam trap, a main containing vessel with a chambered cover asherein shown, connecting pipes for inlet, blow-otf and Waste Water, withdouble and treble Way cocks to connect the several pipes andchambers, sothe inlet steam can enter the trap, be blown off direct, or through thechambersV in the cover of the main vessel, in the manner sub stantiallyas described.

In testimony whereof I have hereunto afxed my signature in the presenceof two Witnesses.

JOHN MCKELLAR.

Witnesses:

ALFRED A. ENQUIST, WILSON I). BENT, Jr.

